Java编写进制转换器

import javax.swing.*;
import javax.swing.border.EmptyBorder;
import javax.swing.border.TitledBorder;

import java.awt.*;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.Stack;



public class ConversionOfNumberSystems extends JFrame  {
    
    /**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private JPanel contentPane;
    private JTextField codeInputField;
    private JTextField charOutputField;
    private String s1="2进制",s2="2进制";
    private String string[]={"进制选择","2进制","8进制","10进制","16进制"};
    
    
    public int Locate(String s){
    	int count=0;
    	for(int i=0;i<5;i++) {
    		if(string[i].equals(s)) {
    			count=i-1;
    			break;
    		}
    	}
    	return count;
    }
    
    public void ChangeToOther(int sum,int k) {
    	StringBuilder builder = new StringBuilder();// 创建字符串构建器
        int al,ah;
        char Hexadecimal[]={'A','B','C','D','E','F'};
        	Stack stack=new Stack();
        	al=sum;
        	while(al!=0) {
        		ah=al%k;
        		stack.push(ah);
        		al=al/k;
        	}
        	while(!stack.empty()) {
        		int a=stack.pop();
        		if(a>=10) {
        			builder.append(Hexadecimal[a-10]);
        		} else {
        		builder.append(a);
        		}
        	}
        	charOutputField.setText(builder.toString());// 结果输出到文本框
        }
    
    public int GetTen(char[] charArray,String text,int len,int b) {
    	int sum=0;
    	int Decimal[]={10,11,12,13,14,15};
    	text = codeInputField.getText();
		charArray = text.toCharArray();
		len=charArray.length;
		for(int i=0;i=0) {
				sum+=Math.pow(b, len-i-1)*(Decimal[charArray[i]-'A']);
			} else {
			sum+=Math.pow(b, len-i-1)*(charArray[i]-'0');
			}
		}
		return sum;
    	
    }
    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        try {//使用默认窗口形式
            UIManager
                    .setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
        } catch (Throwable e) {
            e.printStackTrace();
        }
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    ConversionOfNumberSystems frame = new ConversionOfNumberSystems();//新建窗口
                    frame.setVisible(true);//设置可见
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }
    
    /**
     * Create the frame.
     */
    public ConversionOfNumberSystems() {
        setTitle("\u8FDB\u5236\u8F6C\u6362\u5668");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 450, 171);
        contentPane = new JPanel();//设置面板位置
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        contentPane.setLayout(new BorderLayout(0, 0));
        setContentPane(contentPane);
        
        JPanel panel = new JPanel();//设置面板标题
        panel.setBorder(new TitledBorder(null,
                "\u591A\u79CD\u8FDB\u5236\u8F6C\u6362",
                TitledBorder.LEADING, TitledBorder.TOP, null, new Color(59, 59,
                        59)));
        contentPane.add(panel, BorderLayout.CENTER);//将从面板加入到主面板中
        panel.setLayout(new GridLayout(0, 3, 5, 20));
        
        JButton codeButton = new JButton("\u6E90\u8F6C\u6362\u6570");
        panel.add(codeButton);
        
        codeInputField = new JTextField();
        codeInputField.setHorizontalAlignment(JTextField.CENTER);
        panel.add(codeInputField);
        codeInputField.setColumns(10);
        
        
        JComboBox jc = new JComboBox(string); 
	      jc.addItemListener(new ItemListener(){
	    	    public void itemStateChanged(ItemEvent e){
	    	    	do_charButton_actionPerformed(e);
	    	    }
	    	});
	      panel.add(jc); 
        
        JButton charButton = new JButton("\u76EE\u6807\u8FDB\u5236\u6570");
        panel.add(charButton);
        
        charOutputField = new JTextField();
        charOutputField.setHorizontalAlignment(JTextField.CENTER);//居中设置
        charOutputField.setEditable(false);
        panel.add(charOutputField);
        charOutputField.setColumns(10);
        
        JComboBox jc1 = new JComboBox(string);
	      jc1.addItemListener(new ItemListener(){
	    	    public void itemStateChanged(ItemEvent e){
	    	    	do_codeButton_actionPerformed(e);
	    	    }
	    	});
	      panel.add(jc1); 
	      
    }
    
    
    
    protected void do_charButton_actionPerformed(ItemEvent e) {
    	if(e.getStateChange() == ItemEvent.SELECTED){
	    	 s1 = (String)e.getItem();
    	}
    }
    
    
    protected void do_codeButton_actionPerformed(ItemEvent e) {
    	if(e.getStateChange() == ItemEvent.SELECTED){
    		s2 = (String)e.getItem();
    		int l1=Locate(s1);
    		int l2=Locate(s2);
    		int choice=10*l1+l2;
    		char[] charArray = null;
    		String text = null;
    		int len = 0;
    		int sum=0;
    		switch(choice) {
    		case 1:
    		    sum=GetTen(charArray,text,len,2);
    			ChangeToOther(sum,8);
    			break;
    		case 2:
    			sum=GetTen(charArray,text,len,2);
    			charOutputField.setText(String.valueOf(sum));
    			break;
    		case 3:
    			sum=GetTen(charArray,text,len,2);
    			ChangeToOther(sum,16);
    			break;
    		case 10:
    			sum=GetTen(charArray,text,len,8);
    			ChangeToOther(sum,2);
    			break;
    		case 12:
    			sum=GetTen(charArray,text,len,8);
    			charOutputField.setText(String.valueOf(sum));
    			break;
    		case 13:
    			sum=GetTen(charArray,text,len,8);
    			ChangeToOther(sum,16);
    			break;
    		case 20:
    			text = codeInputField.getText();
    			sum=Integer.valueOf(text);
    			ChangeToOther(sum,2);
    			break;
    		case 21:
    			text = codeInputField.getText();
    			sum=Integer.valueOf(text);
    			ChangeToOther(sum,8);
    			break;
    		case 23:
    			text = codeInputField.getText();
    			sum=Integer.valueOf(text);
    			ChangeToOther(sum,16);
    			break;
    		case 30:
    			sum=GetTen(charArray,text,len,16);
    			ChangeToOther(sum,2);
    			break;
    		case 31:
    			sum=GetTen(charArray,text,len,16);
    			ChangeToOther(sum,8);
    			break;
    		case 32:
    			sum=GetTen(charArray,text,len,16);
    			ChangeToOther(sum,10);
    			break;
    		}
    	}
    }
}